"You're planning to make a ship sail against wind and tide by lighting a fire below deck?? I don't have time to listen to that kind of nonsense!"
"So many centuries after the Creation, it is unlikely that anyone could find hitherto unknown lands of any value."
Spanish Royal Commission, rejecting Christopher Columbus' proposal to sail west.
Napoleon, about Robert Fultons plans to make a Steamboat.
"I believe in the horse. The automobile is merely a passing phenomonon."
Emperor Wilhelm II
"Airplanes suffers from so many technical faults that it is only a matter of time before any reasonable man realizes that they are useless!"
Scientific American (1910)
"Everything that can be invented has been invented."
Attributed to Charles H. Duell, Commissioner, U.S. Office of Patents, 1899.
Hat tip to http://www.rudyh.org/index.htm